Air-brush.



OLAUS O. WOLD, OF CHICAGO, ILLINOIS.

` AIR-BRUSH.

Numdam.

Specification o! Letters Patent.

Patented Jan. 19, 1909.

Application filed April 7, 1908. Serin! No. 426,748.

7b allwhom it may concern: r

Beit known that I, OLAUs C. WoLn, e citizen of the United States,residing ntf Chicago, in the county oi Cool; und Stute of inois,have-invented certain new und useful Im rovements in l'flir-Biuslies,ol' which the fol owing is e specitication.

The resent invention is in the forni of :i small lnstrument, resemblingu Pencil or,` fountain pen in size und shape, unich, Ellie 'a pen, isadapted to he held in the hond and mani ulated by the fingers toutoinize and distri ute point or pigment over the intended surface,either in the forni of u fine line or a spray; and the oli-jects oi' thef present invention ure, to simplify the construction sind arrangementot' the operating mechanism and to locate the init distrizutl ingmechanism et such n rein* that the inl: cannot )ossibly clog the zur..sf-lmrgje ori-:Tice rior leer baci; into `the mech-.mism controllingthe movement of the needle vulve; to so construct and mount theopciriitingr ':nech-.niu l'sm that it will operate freely und pcrertly:Under the action ol'l the finger lever :1nd iu e. manner to permitperfect iii-.1. nipulution while held in working iosition; to siiriolifythe action of the needle valve und obi'iate the necessity for usingspring mechanism loc-:tied at a point Where the' init is lil-ely tocorro-.lc it; and to improve generally the consrucs tion and arrangementof the several device?` 1 constituting the nir brush es e Whole.

In numerous prior constructions nir brushes here had the ink and nirnozzles f concentric und the ink has been utoniizcd by being sucked outof the center ini: nozzle by a surrounding blast of air dischargedthrough un annular opening around the lnk nozzle. The present inventiondeparts from this principle of operation in that the nozzles convergetogether :it the front end ofthe brush and .fire not con-,f centric atall, the init nozzle deiirering inl; at a. point Where it '-.vill z-eido-.vn forwardly therefrom by a .:lnst of nir delivered from behind thenozzle und in :'elineinent with the end thereof. These results :ireoltziined without impairing the ifiilainre oi the iustrument when heldbetween the thum'; and iirst linger of the hund fin-l without gimpairing its ense sind Aerfection ol ninnipulatlon. This nio-de o.distribution insuresl a. clean, perfect, und uniform discharge of. inkwithout the possibility of clogging, spattering or bubbling, which urelil-.ely to occur in the use of air brushes having com centric nozzles.

The invention consists in the features ol construction und combinationof parts l ereineiter descrilfed und claimed.

In the drawings, Figure 1 is u side elevation oi' thc nir brush; Fig. 2e longitudinal jsectionnl elevation showing hoth of the vulves closed;Fig. 3 n siinilur view showing boil: olt the valves open; Fig. 4 :1nenlarged detail olr the ink discharge nozzle und needle valve; 5 :isectional view ol the ink cup; Eig. G u detail showing the stil-rop foropereting` the .:ir vulve; und Fig. 7 a modified form oi' operatingllever,

The brush comprises, essentially, an air nozzle T und en ink nozzle 8set in oblique relation und com-erging toward one another l ut theirl'orixsrd ends. The air nozzle is in the forni o! tei cred nippleprovided in its renter with in air passage 9, and the upper tace of theMinidiis channeled or cut away suliicientl-.' to allow' the tip of theink nozzle t5 lo en rnd diefrounllv through the wall of the ni lsso thatits extreme pointl occupies a pos .on in niincment with the airdischarge passage 1l. The tip l0 of the nipple serves :is e trough orchannel for directm the travel ol the ini; citer it is discharge fromthe inl: nozzle, although the air is released behind the extreme tip ofthe ink nozzle sind at the point X Where such nozzle breaks through theup er Wall of the niple. 'l'he nipple is screw tireaded into the orvmrdend of a conical holloir plug 11, the interior of which `irovides an airchamber for storing up anni equalizing the distribution of nir, Which'hollow plug is screw tin-ended into n cylindrical shell 1?. into the endof which is entered a handle 13 of vul- 1 is adapted to regulate thedischarge of ink admitted through an opening 17, which opening'communicates with an intake assage 18 laterallv extending from the si eof the socket 14, into the end of which is ens screw threaded tered atube 19 which extends inwardly from a tube 20 secured to thc forwardside of a conical ink cup 21 u hich occupies a position behind theintake passage 18 and in close proximity to the side of the shell orcasing. flic aii chamber 11 has entered thereinto the end of. an airsupply pipe 22, the rear end of which is entered into a plug 23 whichdeends from the shell 12. The plug has ormedtlierein anair passage 24,the intake end of which is controlled by a valve 25 beai'ing against aspring 26. The plug terminates in a nipple 27 adapted to have a rubberhose attached thereto. The valve 25 has upwardly extending therefrom astein 28 upon which rests the cross pin 29 of a stirrup 30, whichstirrup has upwardly extending therefrom a finger lever 31 terminat ingin a finger button 32 which is preferably mi led or roughened. The crosspin of the stirrup works Within a slot 33 formed in the upper end of theplug 23, into which slot or recess the end of the stein 28 normally pro-]ects.

The plug 11 has screw threaded thereinto the forwardend of a guide rod34, the rear end of which is entered throu h a socket sleeve 35 havingat its forvrar end a disk sha ed head 3G screw threaded into the end oftlhe shcll 12. The sleeve 35 has entered thereinto the rear end of areciprocating tube 37 which rides upon the guide rbd and bears against aspring 38 located Within the socket sleeve 35. The reciprocating tubehas screw threaded to its forward end a head 39 from which extends alinger 40 in a line at right an les to the' needle valve 16, and the finer 40 is slidably entered into the' end of a socEet arm 41 having a head42 through which the end ofthe needle valve is entered, being heldthereiiiby means of a small thumb screw 43. The reciprocating sleeve isentered through l the stirrup 30 and has located thereon, im-

mediately behind the stirrup, an abutment 44 against which bears abifurcated lever 45, the lower end of which straddles the reciprocatingsleeve and the upper end of which bears avainst the finder lever 31 andis held in slidable contact therewith by the action of the spring 38.The movement of the finger lever can be limited by means of a thumbscrew 46 located forwardly of the finger lever. In order toperinitcleaning of the ink cup tube 20 the latter is provided, at itslower end, with a screw plug 47 which permits the insertion into thetube of a suit able instrument adapted to clean out' the saine in caseof clogging.

In o eration, ink is cured into the cu 21 and a last of air supplied tothe rubber from a suitable source of sup ly for conipressed air. Theoperator pre erably holds the is the hand in the raaf-.Laer el a ne cilwith the index linger upon the finger utton of the lever. By depressingthe lever the OSBr cross pin of the stirrup will bear dowh upon the stemof the air valve, therebyopcning said valve for the admissiii ofcompressed air which will p'ass through the pipe 22 into the air chamber1l, whence it will be discharged from the tapered ni ple forming the airnozzle. By moving bac the finger lever the sleeve 37 will be retracted,drawing back the pin 40, which in turn retracts the socket arm 41 intowhich the in is slidably entered. This retracts the needie and opens theink nozzle to the desired degree, thereby sup ily ing ink from the inkcup, which ink will be blown or driven ofil the ti of the ink nozzle bythe current of air directed against it. Since the tip of the ink nozzleis in the direct path of travel of the current of air the latter will beutilized to a greater extent than is possible in constructions in whichthe ink is sucked out of the ink nozzle by the action of a surroundingcurrent of air, and at the same time the action of the air will be moreuniform and certain than is ordinarily the case in previousconstructions of the class referred to. The operating parts being alllocated inside of the shell and to the rear of the ink nozzle nodifficulty will be experienced b reason of the ink spattering or workingbac into the operating mechanism and clogging the same. Furthermore, theoperatimr mechanism being all carried by the guide ro can be readilypositioned in or removed from the casing. Another difliculty incident tothe ein loyment of concentric nozzles is due to the 'act that unless thelatter are adjusted with extreme exactness the air pressure, instead ofcarrying ink forward, will find its way back, at least in art, throughthe ink nozzle and, instead o blowing the ink. forward and atomizing it,will block the disioo charge of ink and possibly back into the inkreceptacle. By locating the nozzles in obl be entirel nozzles be ma.-adjusted toa very considerable extent. The arrangement is one whichpermits the needle valve to be removed Without disassembling any of theother parts of the brush and permits the ink nozzles to be thereaftercleaned Without the slightest ditiiculty; and the location of the inknozzle and the method of discharging the ink obviate the necessity forcleaning the air passages at all, which is frequently' necessary inbrushes of the old style previously referred to.

Although the invention has been described with considerable articularityas to detail, it is obvious that tlic mechanical means pro vided forregulating the discharge of ink and air can be changed or modified to acc nsiderable extent without departing from the spin't of the invention.For instance, in place of the finger lever le! two iifeJ-eiaeats, likethat previously described, a linger lever 48 can be employed which ispivoted to the casing at the point b means of a ivot pin 49. A lever of'this character has ut a single swinging movement, the forward end of thelever engaging the socket itrm 41 for actuating the needle, and the rearend of the lever engaging thestom of the air valve for openiner thelatter, whereby a single movement o the finger will serve to open bothof. the valves regulating the supply of ink and an'.

W hat I claim as new and desire Ato secure by hetters Patent is: i

1. In an air brush, the combination of an elon ated handle havingsecured thereto a brus 1 easing provided at its forward end with an airdischarge nozzle forwardly projecting in alinement with the casing andprovided with an air passage leading.,r thereto, a

tubular ink discharge nozzle mounted upop` the forward end of the casingand extending in oblique relation to the air discharge nozzle and havingits mouth in close proximit to the air discharge nozzle, an. inkreceptacle in communication with the inl: discha rge nozzle, a needlevalve Within the tubularmk discharge nozzle adapted to control the flowot ink therefrom by enlarging or diminishinl.;p the size of the annularopening around the needle, means under the control of the operatorduring the employment of the brush for controlling the ink discharge esabove indicated, and an air valve for controlling the flow of oirthrough the air passaggi-e, suhstantiallj.' as described. i

2. In an air brush, the combination of an elongated pencil like handlehaving secured thereto a brush easing having at its forward end an airdischarge nozzle and provid( d with :in air passage leading thereto, atubular ink discharge nozzle mounted u on the casing and extending inoblique relation to the air discharge nozzle and having its mouth inclose proximity to the oir discharge nozzle, an ink receptacle incommunication with the ink discharge nozzle, a needle for controllingthe flow of ink from the ink discharge nozzle, an air valve forcontrolling the flow of air through the air assage, and a linger leverpivoted within tie easing and adapted to actuate the needle and the airvalve, substantially as described.

3. ln an air brush, the combination of an elongated pencil like handlehaving secured thereto a brush easing having at its forward end an airdischarge nozzle provided with an air passage leading thereto, a tubularink discharge nozzle in oblique relation to the air discharge nozzle andterminating in line with the disdliarge therefrom, an ink receptacle incommunication with the ink discharge nozzle, a needle valve Within thetubular ink discharge nozzle, a socket arm connected with the needle anddepending the'efrom into the easing, a reciprocatinfT member engagingthe socket arm, an air valve, and a lever having two moven'ients, onemovement adapted to control the air valve and the other movement adaptedto move the reciproeatin member for regulating the position of t eneedle valve, substantially as described.

4. In an air brush, the combination oi a brush casing having at itsforwardend :rn air discharge nozzle provided with au air passage leadinthereto, a' tubular ink discharge nozzle 1n oblique relation to the airdischar fe nozzle and terminating in line with the disiarge therefrom,an ink receptacle in communication with the ink discharge nozzle, aneedle valve Within the tubular ink dis charge nozzle, a socket armeonnected'ivith the needle and depending therefrom into the casing, areciprocating member engaging the socket arm, an air valve, and a levermounted to have an up and down movement adapted to actuate the air valveand having a fore and aft movement adapted to move the reciproeatingmember for actuating the needle valve, substantially as described.

5. In an air brush, the combination of a brush casing having atitslorward end an air discharge nozzle provided with an air passageleading thereto, a tubular ink discharge nozzle in voblique relation tothe air discharge nozzle and terminating inline with the dischargetherefrom, an ink receptacle in communication with the ink discharge`nozzle, a needle valve Within the tubular ink discharge nozzle, a socketerm connected with the nerdle and depending therefrom into the easing, areciprocating member engaging the soci-:et arm, an air vs ve, a fingerlever having a bi furcate'd lower end which bears against the air valve,and a secondary lever actuated h5 the finger lever and engaging thereciprocating member for imparting a Jfore and aft movement thereto whenthe linger lever is swung back. and forth, substantially as de*-seribed.

6. In an air brush, the combination of a brush casing having at itsforward end an air discharge nozzle provided with an nir passage leadingthereto, a tubular ink discharge nozzle in cooperative relation to theair discharge nozzle, an inl; rece )tacle in` coml mumeation with theink discharge nozzle, al needle for controlling the flow of ink from theink discharge nozzle, a guide rod, a sleeveslidably mounted upon theguide rod and conneetcdnwith the needle, a spring bearing against therear end of the sleeve, an air valve controllinfr the flow of airthrough the air passa e a biiurcated finger lever bearing against tieupper end of the air valve an adapted to actuat'e the same by an up anddonn movement, and a secondary lever engeving .the reciprocating sleeveand adapted tobe actuated by a fore and aft movement of the fingerlever, substantially as described.

7. 'In an air brush, the combination of an 130 elongated pencil likehandle having secured thereto a' bi'ush casing having at its forward pend a contracted air discharge nozzle and an enlarged air reservoirtothe rear of the nozzle, an. air passage leadin to the air reservoir,an air valve controlling t ie flow of air to said passage, an ink nozzleset in oblique relation to the air dischar e nozzle and terminating in lline with the discharge therefrom, a needle valve within the inkdischarge nozzle, an ink i receptacle in communication therewith, and gmeans for actuating the air valve and the needle valve, substantially asdescribed.

' 8. ln an air brush, the combination of a brush casin havingat itsforward end a contracted air ischarge nozzle and an enlarged i 'airreservoir t'o the rear of the nozzle,`an air i, passage leading to theair reservoir, an air i valve controlling thel flow of air to saidpassage, an ink nozzle set in oblique relation to the air discharevnozzle and terminating in line with the ischarge therefrom, a needlevalve within ,the ink discharge nozzle, an in'k rece tacle incommunication therewith, a gui eV rod extending longitudinally withinthe casing,l a reciprocating sleeve mounted upon the guide rod, a fingerconnected with and upwardly projecting from the sleeve in transverserelation tothe needlevalve, a socket arm connected with the needle valveinto which the end of the finger is slidably entered, a spring bearingagainst the reciprocating sleeve, a finger lever adapted to actuate theair valve by an up and down movement, and a secondary lever bearingagainst the finger lever and enga ing the reciprocating sleeve forimparting aore and aft movement to the latter when the finger lever isswung and forth, Substantially as described.

9. In an air brush, the combination of an air discharge nozzle channeledor recessed on one side, an ink discharge nozzle in oblique relation tothe discharge air nozzle andhavback ing its tip entered through thechanneled or recessed portion of the air discharge nozzle` andterminating iii line with the discharge orifice thereof, a needle valvewithin the ink discharge nozzle, an ink receptacle communieating withthe ink discharge nozzle, an air passage leading to the air dischargenozzle, and means for regulating the flow of inkand air to therespective nozzles, substantially as described.

10. In an air brush, the combination of an air discharge nozzlechanneled or recessed o n one side, an ink discharge nozzle in obliquerelation to the air dischar e nozzle and having its tip entered throught e channeled or recessed portion of the air discharge nozzle andterminating in line with the discharge orifice thereof, a needle valvewithin the ink discharge nozzle, an ink receptacle provided with asupply pipe on its forward side terminating in a tube extending inwardlyat right angles to the end of the pipe and in communication with the inkdischarge nozzle, and means for regulating the osition of the 'needlevalve and regulating t e air supply,

substantially as described.

11. In an air brush, the combination of an air discharge nozzle, an inkdischarge nozzle in oblique relation to the air dischar e nozzle andhaving its ti in line with the ischarge therefrom, a nee le valve withinthe ink discharge nozzle, an ink receptacle rovided with a supply pipeon its forward si e terminating in a tube extending inwardly at rightangles to the end'of the ipe and in communication with the ink ischargenozzle, and means for re ulating the position of the needle valve anregulating the air supply, substantially as described.

OLAUS C. WOLD. 'itnesses WALKER BANNING, PIERsoN W. BANKING.

